| Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
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Pension |
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Foreign |
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and other |
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Amounts |
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|
Amounts |
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currency |
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postretirement |
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attributable to |
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attributable to |
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translation |
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benefits |
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noncontrolling |
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Huntsman |
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|
adjustments(1) |
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|
adjustments(2) |
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Other, net |
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|
Total |
|
|
interests |
|
|
Corporation |
|
| Beginning balance, January 1, 2026 |
|
$ |
(543 |
) |
|
$ |
(490 |
) |
|
$ |
4 |
|
|
$ |
(1,029 |
) |
|
$ |
23 |
|
|
$ |
(1,006 |
) |
| Other comprehensive loss before reclassifications, gross |
|
|
(12 |
) |
|
|
— |
|
|
|
— |
|
|
|
(12 |
) |
|
|
(2 |
) |
|
|
(14 |
) |
| Tax impact |
|
|
(1 |
) |
|
|
— |
|
|
|
— |
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|
(1 |
) |
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|
— |
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|
|
(1 |
) |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
5 |
|
|
|
— |
|
|
|
5 |
|
|
|
— |
|
|
|
5 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive (loss) income |
|
|
(13 |
) |
|
|
4 |
|
|
|
— |
|
|
|
(9 |
) |
|
|
(2 |
) |
|
|
(11 |
) |
| Ending balance, March 31, 2026 |
|
$ |
(556 |
) |
|
$ |
(486 |
) |
|
$ |
4 |
|
|
$ |
(1,038 |
) |
|
$ |
21 |
|
|
$ |
(1,017 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
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|
|
|
|
|
|
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|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
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|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
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|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
Corporation |
|
| Beginning balance, January 1, 2025 |
|
$ |
(675 |
) |
|
$ |
(552 |
) |
|
$ |
— |
|
|
$ |
(1,227 |
) |
|
$ |
27 |
|
|
$ |
(1,200 |
) |
| Other comprehensive income (loss) before reclassifications, gross |
|
|
32 |
|
|
|
(12 |
) |
|
|
6 |
|
|
|
26 |
|
|
|
— |
|
|
|
26 |
|
| Tax impact |
|
|
3 |
|
|
|
— |
|
|
|
— |
|
|
|
3 |
|
|
|
— |
|
|
|
3 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
4 |
|
|
|
— |
|
|
|
4 |
|
|
|
— |
|
|
|
4 |
|
| Tax impact |
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Net current-period other comprehensive income (loss) |
|
|
35 |
|
|
|
(8 |
) |
|
|
6 |
|
|
|
33 |
|
|
|
— |
|
|
|
33 |
|
| Ending balance, March 31, 2025 |
|
$ |
(640 |
) |
|
$ |
(560 |
) |
|
$ |
6 |
|
|
$ |
(1,194 |
) |
|
$ |
27 |
|
|
$ |
(1,167 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
International |
|
| Beginning balance, January 1, 2026 |
|
$ |
(547 |
) |
|
$ |
(466 |
) |
|
$ |
— |
|
|
$ |
(1,013 |
) |
|
$ |
23 |
|
|
$ |
(990 |
) |
| Other comprehensive loss before reclassifications, gross |
|
|
(13 |
) |
|
|
— |
|
|
|
— |
|
|
|
(13 |
) |
|
|
(2 |
) |
|
|
(15 |
) |
| Tax impact |
|
|
(1 |
) |
|
|
— |
|
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
5 |
|
|
|
— |
|
|
|
5 |
|
|
|
— |
|
|
|
5 |
|
| Tax impact |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
|
|
— |
|
|
|
(1 |
) |
| Net current-period other comprehensive (loss) income |
|
|
(14 |
) |
|
|
4 |
|
|
|
— |
|
|
|
(10 |
) |
|
|
(2 |
) |
|
|
(12 |
) |
| Ending balance, March 31, 2026 |
|
$ |
(561 |
) |
|
$ |
(462 |
) |
|
$ |
— |
|
|
$ |
(1,023 |
) |
|
$ |
21 |
|
|
$ |
(1,002 |
) |
| |
|
|
|
|
|
Pension |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
Foreign |
|
|
and other |
|
|
|
|
|
|
|
|
|
|
Amounts |
|
|
Amounts |
|
| |
|
currency |
|
|
postretirement |
|
|
|
|
|
|
|
|
|
|
attributable to |
|
|
attributable to |
|
| |
|
translation |
|
|
benefits |
|
|
|
|
|
|
|
|
|
|
noncontrolling |
|
|
Huntsman |
|
| |
|
adjustments(1) |
|
|
adjustments(2) |
|
|
Other, net |
|
|
Total |
|
|
interests |
|
|
International |
|
| Beginning balance, January 1, 2025 |
|
$ |
(680 |
) |
|
$ |
(528 |
) |
|
$ |
(4 |
) |
|
$ |
(1,212 |
) |
|
$ |
27 |
|
|
$ |
(1,185 |
) |
| Other comprehensive income (loss) before reclassifications, gross |
|
|
32 |
|
|
|
(12 |
) |
|
|
6 |
|
|
|
26 |
|
|
|
— |
|
|
|
26 |
|
| Tax impact |
|
|
3 |
|
|
|
— |
|
|
|
— |
|
|
|
3 |
|
|
|
— |
|
|
|
3 |
|
| Amounts reclassified from accumulated other comprehensive loss, gross(3) |
|
|
— |
|
|
|
4 |
|
|
|
— |
|
|
|
4 |
|
|
|
— |
|
|
|
4 |
|
| Tax impact |
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
|
|
— |
|
| Net current-period other comprehensive income (loss) |
|
|
35 |
|
|
|
(8 |
) |
|
|
6 |
|
|
|
33 |
|
|
|
— |
|
|
|
33 |
|
| Ending balance, March 31, 2025 |
|
$ |
(645 |
) |
|
$ |
(536 |
) |
|
$ |
2 |
|
|
$ |
(1,179 |
) |
|
$ |
27 |
|
|
$ |
(1,152 |
) |
|
| Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
| |
|
Three months ended March 31, |
|
|
|
| |
|
2026 |
|
|
2025 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(2 |
) |
|
$ |
(2 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
7 |
|
|
|
7 |
|
(3) |
Other income, net |
| Settlement gain |
|
|
— |
|
|
|
(1 |
) |
(3) |
Other income, net |
| |
|
5 |
|
|
4 |
|
|
|
| |
|
|
(1 |
) |
|
|
— |
|
|
Income tax |
| Total reclassifications for the period |
|
$ |
4 |
|
|
$ |
4 |
|
|
|
| |
|
Three months ended March 31, |
|
|
|
| |
|
2026 |
|
|
2025 |
|
|
|
| |
|
Amounts reclassified |
|
|
Amounts reclassified |
|
|
Affected line item in |
| |
|
from accumulated |
|
|
from accumulated |
|
|
the statement |
| Details about accumulated other |
|
other |
|
|
other |
|
|
where net income |
| comprehensive loss components(1)(2): |
|
comprehensive loss |
|
|
comprehensive loss |
|
|
is presented |
| Amortization of pension and other postretirement benefits: |
|
|
|
|
|
|
|
|
|
|
| Prior service credit |
|
$ |
(2 |
) |
|
$ |
(2 |
) |
(3) |
Other income, net |
| Actuarial loss |
|
|
7 |
|
|
|
7 |
|
(3) |
Other income, net |
| Settlement gain |
|
|
— |
|
|
|
(1 |
) |
(3) |
Other income, net |
| |
|
5 |
|
|
4 |
|
|
|
| |
|
|
(1 |
) |
|
|
— |
|
|
Income tax |
| Total reclassifications for the period |
|
$ |
4 |
|
|
$ |
4 |
|
|
|
|